Hanger for playground swings



Jan. 7, J BURKE I HANGER FOR PLAYGROUND SWINGS Filed July 8, 1955 2 Sheets-Sheet l Jan. 7, J E'BURKE V HANGER FOR PLAYGROUND SWINGS Filed July 8, 1955 2 Sheets-Sheet 2 i J. Burke.

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Patented Jan. 7, 1936 UNITED STATES HANGER Foa PLAYGROUND swmos John Edward Burke, Fond du Lac, Wis., assignor to Ethlyn M. Burke, Fond du Lac, Wis.

Application July 8, 1935, Serial No. 30,404

2 Claims.

Another object of the invention is to provide an improved hanger for playground swings, in which the inverted U-shape hanger will be formed with laterally extending trunnions on which are mounted ball bearing races, which rest upon the bottom of the bearing box and run in an oil bath, which is protected at all times from the weather and elements.

A further object of the invention is to provide an improved playground swing hanger which will be extremely durable and capable of a long period of service, due to the lack of friction between the moving parts brought about by the use of ball bearing races mounted in an oil bath.

A still further object of the invention is to provide an improved ball bearing hanger for playground swings which will be highly eflicient in use and quite inexpensive to manufacture.

Other objects will appear as the description proceeds. r

In the accompanying drawings which form a part of my application,

Figure l is a side elevation partly in section of my improved ball bearing playground swing hanger;

Figure 2 is a sectional view taken onthe line 2-2 of Figure 1; Y

Figure 3 is an end elevation partly in section of my improved swing hanger, and

Figure 4 is a perspective view of the pivoted hanger element.

Like characters of reference are used throughout the following specification and the accompanying drawings to designate corresponding parts.

In carrying out my invention, I provide an improved ball bearing hanger for playground swings, which comprises an upper clamping element I and a lower clamping element 2, adapted to be clamped about a supporting pipe 3, and to cooperate with a combined bearing box and oil reservoir 4, in which the hanger 5 is adapted to be mounted.

The bearing box and oil reservoir 4 is formed with substantially parallel side walls 6, and with downwardly tapering end walls 1 which are connected and reinforced by the spaced partitions or walls 8, thereby forming the spaced oil reservoirs 9 for the reception of lubricating oil l0. A slot or opening II is cut in the bottom of the box 4 between the partition walls 8 and at the lower portion thereof, through which the hanger 5 is adapted to extend.

The hanger 5 comprises an integrally formed inverted U-shape element having spaced side 10 arms I2, a connecting portion I3, and a centrally disposed depending hanger portion which terminates in the closed eye l4, and to which the swing chain (not shown) may be attached. The

free or lower ends of the side arms l2 are formed 1 r with the enlarged bearing portions I5 and the outwardly or laterally extending trunnions I6, which are adapted to support the ball bearing races [1, which in turn,. are adapted to seat on or have bearing on the bottom of the box or oil reservoirs 9. The outer ends of the trunnions will be substantially in contact with the inner walls of the box sides 6, so that there will be no lost motion between the hanger and the box supporting the same. It will be seen that the bearing-portions l5 engage the inner sides of the ball bearing races IT, to limit their movement inwardly. A hard fibre gasket l8 will be disposed between the bearing box 4 and the lower clamping element 2, so that the lubricating oil II] in the reservoirs 9 will be fully protected from the weather. Oneor more suitable oil holes [9 will be formed through the box 4, for filling the same with oil.-

The clamping elements I and 2, and the bearing box 4, will be fastened on the supporting pipe 3 by means of the bolts 20, which extend through the several parts, as clearly illustrated in Figure 1 of the drawings.

Many minor changes in detail of construction may be resorted to without departure from the spirit of the invention.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is: 4

1. Means for attaching a swing to an overhead support comprising a hanger box having a seat to engage the support and a clamping element having a complemental seat for holding the box assembled with the support, said box having spaced partitions formed intermediate the ends thereof to form oil reservoirs with a slot therebetween, and a hanger comprising an inverted U-shape member having enlarged free ends terminating in trunnions extending laterally therefrom, said trunnions being provided with'antibetween, and a hanger comprising an inverted friction means adapted to be positioned in said U-shape member having enlarged free ends terreservoirs, and a depending arm disposed interminating in trunnions extending laterally there- 'mediate the sides of said hanger and formed infrom, said trunnions being provided with shoultegrally therewith and having a closed eye at its ders and anti-friction means carried by said 5 6 free end extending through said slot and below trunnions and adapted to be clampingly posisaid hanger box. tioned between said shoulders and the end Walls 2. Means for attaching a swing to an overhead of said box, and a depending arm disposed insupport comprising a hanger box having a seat termediate the sides of said hanger and formed to engage the support and a clamping element integrally therewith and having a closed eye at 10 10 having a compiemental seat for holding the box its free end extending through said slot and assembled with the support, said box having :below said hanger box. spaced partitions formed intermediate the ends J. E. BURKE. thereof to form oil reservoirs with a slot there- 

